* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
}
body {
  height: 200vh;
  background: #111;
}
section {
  position: absolute;
  width: 100%;
  height: calc(100% - 200px);
  background: #2abbff;
}
section .curve {
  position: absolute;
  bottom: -200px;
  height: 200px;
  width: 100%;
  transform-origin: top;
}

.curve img {
  width: 100%;
  height: 100%;
}
